Believe me its 3-4, shanahan just doesn't want coaches around the league to start planing for it. It's been known for a while, he's just trying to throw you off or think of something else to get you to think "Ohh maybe its going to be a 4-3 instead"

i agree that shanahan has no reason to admit we're switching to a 3-4 right now. however, i also agree that he'd be a complete moron to switch to a base 3-4 with the current personnel we have in place. As of right now, the only prototypical 3-4 player we've added to our defense is a NT who can't even pass a physical. we had a shortage of good linebackers when running the 4-3 - there's no way we can switch to the 3-4 without acquiring alot more talent. free agency is dwindling down. we only have 5 draft picks and, by all appearances, we won't be drafting anyone before the 4th round who doesnt play offense. there's plenty of time before our 53-man roster is finalized, but unless/until we do a significant overhaul of our defensive front 7, i think the chances are we'll be keeping a base 4-3 for another year.

To paraphrase: Are we a 4-3? Maybe when camp comes around we'll realize we're more of a 4 man front kind of team. Or maybe we're a 3-4. Will we be more like Pitt, Dal, NE, or SD? Who really knows? You can't really make those decisions until you see how your personnel plays.